Port Mapping
Page 19-69
Creating a Port Mapping Set
Use the pmapcr command to create a port mapping set. Follow these steps:
1. Enter
pmapcr at a system prompt.
2. The following screen displays:
Port Map Configuration
1. Ingress List :
2. Egress List :
Enter the ingress ports and egress ports for this map set. This is done by entering the line
number, an equal sign, and the port (or ports) to be added. For example, if you want to
create a map set with and ingress port of 3/6 and an egress port of 4/6, you would enter
the following at the prompt:
1=3/6
2=4/6
This must be done in two separate operations, one for the ingress and one for the egress
lists. You can add more than one port to a list by using a comma (,) between slot/port
designations, or a dash (-) between port numbers. For example, if you wanted to make
ports 4/1, 4/6, 4/7, 4/8, and 4/9 egress ports for this map set, you would enter the follow-
ing:
2=4/1, 4/6-9
A switch port in the ingress list can only communicate with switch ports in the egress list.
Switch ports in the same list cannot communicate with each other or any other ports in
the switch. For example, if you enter:
1=2/1, 3/1
2=2/2, 3/2
then you are creating a paired set of four ports. Port 2/1 can only communicate with ports
2/2 or 3/2. It cannot communicate with any other ports in the switch, including port 3/1.
Port 3/1 also can only communicate with ports 2/2 and 3/2, but no others.
Any port type may be added to a port mapping set. However, only Mammoth-generation
Ethernet ports will be restricted by port mapping limitations. For example, you could add
a non-Ethernet port to the set, but traffic from that port would not be restricted.
3. You will want to save your configuration, so enter an
s at the port-mapping prompt. Your
configuration will be saved. A prompt similar to the following appears to confirm the
creation of the port map:
Port Map 7 created.
The port map number is used when modifying the map set.
It is important to remember that port communication is uni-directional. A mapping between
an ingress port and an egress port can only pass data from the ingress port to the egress port.
To allow traffic to flow the from the egress port to the ingress port, it is necessary to create a
new mapping.
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